// klass.js
var student = require('./student')
var teacher = require('./teacher')

function add(teacherName,studentName) {
	teacher.add(teacherName)
	student.add(studentName)	
}

exports.add = add
// 若想把模块类型从传统的模块实例修改为其他类型，则需要用 module来声明模块
// module.exports = add